Reflecting module for ois and camera module including the same

ABSTRACT

A reflecting module for optical image stabilization (OIS) includes: a housing including an internal space; a driving holder including a reflecting member and supported by an inner wall of the housing in a state in which a driving plate is fitted between the driving holder and the housing so that the driving holder is provided in the internal space; and a driving part configured to provide driving force to the driving holder to move the driving holder. The driving plate is linearly movable along one axis approximately perpendicular to an optical axis or is rotatable around the one axis with respect to the housing. The driving holder is linearly movable along the one axis or is rotatable around the one axis with respect to the driving plate.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit under 35 U.S.C. § 119(a) of KoreanPatent Application Nos. 10-2017-0021741 and 10-2017-0061821 filed onFeb. 17, 2017 and May 18, 2017, respectively, in the Korean IntellectualProperty Office, the entire disclosures of which are incorporated hereinby reference for all purposes.

BACKGROUND 1. Field

The following description relates to a reflecting module for opticalimage stabilization (OIS) and a camera module including the reflectingmodule.

2. Description of Related Art

Recently, camera modules have been standardly installed in portableelectronic devices such as tablet personal computers (PCs) and laptopPCs, as well as in smartphones, and an autofocusing function, an opticalimage stabilization (OIS) function, and a zoom function have beenimplemented in camera modules for mobile terminals.

As the structures of camera modules including various functions havebecome relatively complicated, research into a technology for reducingthe sizes of camera modules to be mounted in mobile terminals, which arecontinuously being miniaturized, has been continuously undertaken.

In addition, when a barrel and a holder including a lens is directlymoved for the purpose of OIS, both a weight of the lens itself andweights of other members to which the lens is attached should beconsidered, and a certain level or more of driving force is thusrequired in order to move the barrel or the holder, resulting inincreased power consumption.

SUMMARY

This Summary is provided to introduce a selection of concepts in asimplified form that are further described below in the DetailedDescription. This Summary is not intended to identify key features oressential features of the claimed subject matter, nor is it intended tobe used as an aid in determining the scope of the claimed subjectmatter.

In one general aspect, a reflecting module for optical imagestabilization (01S) includes: a housing including an internal space; adriving holder including a reflecting member and supported by an innerwall of the housing in a state in which a driving plate is fittedbetween the driving holder and the housing so that the driving holder isprovided in the internal space; and a driving part configured to providedriving force to the driving holder to move the driving holder. Thedriving plate is linearly movable along one axis approximatelyperpendicular to an optical axis or is rotatable around the one axiswith respect to the housing. The driving holder is linearly movablealong the one axis or is rotatable around the one axis with respect tothe driving plate.

The driving plate may be configured to move together with the drivingholder, in response to the driving plate being linearly moved along theone axis or rotated around the one axis. The driving holder may beconfigured to move relative to the driving plate, in response to thedriving holder being linearly moved along the one axis or rotated aroundthe one axis.

The driving plate may include one or more first ball bearing setsincluding first ball bearings aligned in one axial direction on asurface of the driving plate facing the housing, and a second ballbearing set including second ball bearings aligned in the one axialdirection on another surface of the driving plate facing the drivingholder.

The one or more first ball bearing sets may include two first ballbearing sets, and the first ball bearings may be aligned in the oneaxial direction between the driving plate and the housing when thedriving plate is linearly moved with respect to the housing.

The second ball bearings may include two or more second ball bearings,and the two or more second ball bearings may be aligned in the one axialdirection between the driving holder and the driving plate when thedriving holder is rotated with respect to the driving plate.

The two or more second ball bearings may be positioned at approximatelya center of the driving plate in another axial direction perpendicularto the optical axis and the one axis.

The first ball bearings may be fixed to the driving plate or thehousing, or may be freely rotatable. The second ball bearings may befixed to the driving plate or the driving holder, or may be freelyrotatable.

The first and second ball bearings may have a spherical shape or aspherical shape of which a portion is cut.

The driving plate may include one or more ball bearings having acylindrical or semi-cylindrical shape that is elongate along anotheraxis perpendicular to the optical axis and the one axis between thedriving plate and the housing when the driving plate is linearly movedwith respect to the housing.

The driving holder may include one or more ball bearings having acylindrical or semi-cylindrical shape that is elongate along the oneaxis between the driving holder and the driving plate when the drivingholder is rotated with respect to the driving plate.

The reflecting module for OIS may further include: a pulling magnetdisposed in one of the housing and the driving holder; and a pullingyoke disposed in the other of the housing and the driving holder,wherein the driving holder is supported by the inner wall of the housingby attractive force between the pulling magnet and the pulling yoke.

Any one of facing surfaces of the housing and the driving plate mayinclude seating grooves into which the ball bearings are inserted.

The seating grooves may be elongate in a direction in which the ballbearings are aligned.

A cross section of the seating grooves may have a polygonal shape or around shape.

In another general aspect, a camera module includes: a lens moduleincluding lenses; and a reflecting module for optical imagestabilization (OIS) disposed in front of the lens module and configuredto change a path of light incident to the reflecting module to directthe light toward the lens module. The reflecting module includes ahousing including an internal space, a driving holder including areflecting member and supported by an inner wall of the housing in astate in which a driving plate is fitted between the driving holder andthe housing so that the driving holder is provided in the internalspace, and a driving part configured to provide driving force to thedriving holder to move the driving holder. The driving plate is linearlymovable along one axis approximately perpendicular to an optical axis oris rotatable around the one axis with respect to the housing. Thedriving holder is linearly movable along the one axis or is rotatablearound the one axis with respect to the driving plate.

The lens module may be disposed in the housing, and a main board onwhich coils for driving the lens module and the reflecting module forOIS are mounted is disposed on side surfaces and a bottom surface of thehousing.

The main board may include a double-sided substrate. The coils may bemounted on an inner surface of the main board toward the internal spaceof the housing. Components and a gyro sensor may be mounted on an outersurface of the main board opposing the inner surface of the main board.

Other features and aspects will be apparent from the following detaileddescription, the drawings, and the claims.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view illustrating a portable electronic device,according to an embodiment.

FIG. 2 is a perspective view illustrating a camera module, according toan embodiment.

FIGS. 3A and 3B are cross-sectional views illustrating the cameramodule, according to an embodiment.

FIG. 4 is an exploded perspective view illustrating the camera module,according to an embodiment.

FIG. 5 is a perspective view illustrating a housing of the cameramodule, according to an embodiment.

FIGS. 6A and 6B are exploded perspective views illustrating a drivingplate and a driving holder of the camera module, according to anembodiment.

FIG. 7 is a perspective view illustrating a lens holder of the cameramodule, according to an embodiment.

FIG. 8 is an assembled perspective view illustrating components otherthan a cover in the camera module, according to an embodiment.

FIG. 9 is an assembled perspective view illustrating the housing and aboard in the camera module, according to an embodiment.

FIG. 10 is an exploded perspective view illustrating the housing and thedriving holder in the camera module, according to an embodiment.

FIGS. 11A through 110 are schematic views illustrating an example of amanner in which the driving holder is linearly moved along a secondaxis.

FIGS. 12A through 12C are schematic views illustrating an example of amanner in which the driving holder is rotated around a second axis.

FIG. 13 is a perspective view illustrating a main board, according to anembodiment, and coils and components mounted on the main board.

FIG. 14 is a perspective view illustrating a portable electronic device,according to another embodiment.

Throughout the drawings and the detailed description, the same referencenumerals refer to the same elements. The drawings may not be to scale,and the relative size, proportions, and depiction of elements in thedrawings may be exaggerated for clarity, illustration, and convenience.

DETAILED DESCRIPTION

The following detailed description is provided to assist the reader ingaining a comprehensive understanding of the methods, apparatuses,and/or systems described herein. However, various changes,modifications, and equivalents of the methods, apparatuses, and/orsystems described herein will be apparent after an understanding of thedisclosure of this application. For example, the sequences of operationsdescribed herein are merely examples, and are not limited to those setforth herein, but may be changed as will be apparent after anunderstanding of the disclosure of this application, with the exceptionof operations necessarily occurring in a certain order. Also,descriptions of features that are known in the art may be omitted forincreased clarity and conciseness.

The features described herein may be embodied in different forms, andare not to be construed as being limited to the examples describedherein. Rather, the examples described herein have been provided merelyto illustrate some of the many possible ways of implementing themethods, apparatuses, and/or systems described herein that will beapparent after an understanding of the disclosure of this application.

Throughout the specification, when an element, such as a layer, region,or substrate, is described as being “on,” “connected to,” “coupled to,”“over,” or “covering” another element, it may be directly “on,”“connected to,” “coupled to,” “over,” or “covering” the other element,or there may be one or more other elements intervening therebetween. Incontrast, when an element is described as being “directly on,” “directlyconnected to,” “directly coupled to,” “directly over,” or “directlycovering” another element, there can be no other elements interveningtherebetween.

As used herein, the term “and/or” includes any one and any combinationof any two or more of the associated listed items.

Although terms such as “first,” “second,” and “third” may be used hereinto describe various members, components, regions, layers, or sections,these members, components, regions, layers, or sections are not to belimited by these terms. Rather, these terms are only used to distinguishone member, component, region, layer, or section from another member,component, region, layer, or section. Thus, a first member, component,region, layer, or section referred to in examples described herein mayalso be referred to as a second member, component, region, layer, orsection without departing from the teachings of the examples.

Spatially relative terms such as “above,” “upper,” “below,” and “lower”may be used herein for ease of description to describe one element'srelationship to another element as shown in the figures. Such spatiallyrelative terms are intended to encompass different orientations of thedevice in use or operation in addition to the orientation depicted inthe figures. For example, if the device in the figures is turned over,an element described as being “above” or “upper” relative to anotherelement will then be “below” or “lower” relative to the other element.Thus, the term “above” encompasses both the above and below orientationsdepending on the spatial orientation of the device. The device may alsobe oriented in other ways (for example, rotated 90 degrees or at otherorientations), and the spatially relative terms used herein are to beinterpreted accordingly.

The terminology used herein is for describing various examples only, andis not to be used to limit the disclosure. The articles “a,” “an,” and“the” are intended to include the plural forms as well, unless thecontext clearly indicates otherwise. The terms “comprises,” “includes,”and “has” specify the presence of stated features, numbers, operations,members, elements, and/or combinations thereof, but do not preclude thepresence or addition of one or more other features, numbers, operations,members, elements, and/or combinations thereof.

Due to manufacturing techniques and/or tolerances, variations of theshapes shown in the drawings may occur. Thus, the examples describedherein are not limited to the specific shapes shown in the drawings, butinclude changes in shape that occur during manufacturing.

The features of the examples described herein may be combined in variousways as will be apparent after an understanding of the disclosure ofthis application. Further, although the examples described herein have avariety of configurations, other configurations are possible as will beapparent after an understanding of the disclosure of this application.

Hereinafter, embodiments will be described in detail with reference tothe accompanying drawings.

FIG. 1 is a perspective view illustrating a portable electronic device1, according to an embodiment.

Referring to FIG. 1, the portable electronic device 1 may be a portableelectronic device such as a mobile communications terminal, asmartphone, or a tablet personal computer (PC), in which a camera module1000 is mounted.

As illustrated in FIG. 1, the portable electronic device 1 includes thecamera module 1000 to capture an image of a subject.

The camera module 1000 includes lenses, and an optical axis (a Z axis)of each of the lenses is directed toward a direction perpendicular to athickness direction (a Y-axis direction or a direction from a frontsurface of the portable electronic device to a rear surface thereof oran opposite direction to the direction from the front surface of theportable electronic device to the rear surface thereof) of the portableelectronic device 1.

As an example, the optical axis (the Z axis) of each of the lensesincluded in the camera module 1000 may be formed in a width direction ora length direction (an X-axis direction or a Z-axial direction) of theportable electronic device 1.

Therefore, even in the case that the camera module 1000 has functionssuch as an autofocusing (AF) function, a zoom function, an optical imagestabilization (hereinafter, referred to as OIS) function, a thickness ofthe portable electronic device 1 may not be increased. Therefore, theportable electronic device 1 may be miniaturized.

The camera module 1000 has any one or any combination of any two or moreof the AF function, the zoom function, and the OIS function.

Since the camera module 1000 including the AF function, the zoomfunction, and the OIS function, needs to include various components, asize of the camera module may be increased in comparison to a generalcamera module.

When the size of the camera module 1000 is increased, it may bedifficult to miniaturize the portable electronic device 1 in which thecamera module 1000 is mounted.

For example, when the number of stacked lenses in the camera module isincreased for the purpose of the zoom function and the stacked lensesare formed in the camera module in the thickness direction of theportable electronic device, a thickness of the portable electronicdevice may also be increased depending on the number of stacked lenses.Therefore, when the thickness of the portable electronic device is notincreased, it may not be possible to provide a sufficient number ofstacked lenses, such that zoom performance may be deteriorated.

In addition, an actuator moving a lens group in an optical axialdirection or a direction perpendicular to the optical axis needs to beinstalled in order to implement the AF function and the OIS function,and when the optical axis (the Z axis) of the lens group is formed inthe thickness direction of the portable electronic device, the actuatormoving the lens group also needs to be installed in the thicknessdirection of the portable electronic device. Therefore, a thickness ofthe portable electronic device may be increased.

However, in the camera module 1000, the optical axis (the Z axis) ofeach of the lenses is disposed perpendicular to the thickness directionof the portable electronic device 1 (that is, the optical axis (the Zaxis) of each of the lenses is disposed in a direction parallel to awide surface of the portable electronic device 1). Therefore, even inthe case in which the camera module 1000 having the AF function, thezoom function, and the OIS function is mounted in the portableelectronic device 1, the portable electronic device 1 may beminiaturized.

FIG. 2 is a perspective view illustrating the camera module 1000,according to an embodiment. FIGS. 3A and 3B are cross-sectional viewsillustrating the camera module 1000, according to an embodiment.

Referring to FIGS. 2 through 3B, a camera module 1000 includes areflecting module 1100, a lens module 1200, and an image sensor module1300 disposed in a housing 1010.

The reflecting module 1100 changes a moving direction of light. As anexample, a moving direction of light incident through an opening 1031(see FIG. 3A) of a cover 1030 covering an upper portion of the cameramodule 1000 is changed through the reflecting module 1100 so that thelight is directed toward the lens module 1200. To this end, thereflecting module 1100 includes a reflecting member 1110 that reflectsthe light.

A path of the light incident through the opening 1031 is changed by thereflecting module 1100 so that the light is directed toward the lensmodule 1200. For example, a path of light incident in the thicknessdirection (the Y-axis direction) of the camera module 1000 is changed bythe reflecting module 1100 to approximately coincide with the opticalaxial direction (the Z-axial direction).

The lens module 1200 includes lenses through which the light of whichthe moving direction is changed by the reflecting module 1100 passes,and the image sensor module 1300 includes an image sensor 1310 thatconverts the light passing through the lenses into an electrical signaland a printed circuit board 1320 on which the image sensor 1310 ismounted. In addition, the image sensor module 1300 includes an opticalfilter 1340 that filters the light incident thereto from the lens module1200. The optical filter 1340 may be an infrared cut-off filter.

In an internal space of the housing 1010, the reflecting module 1100 isdisposed in front of the lens module 1200 and the image sensor module1300 is disposed behind the lens module 1200.

Thus, referring to FIGS. 2 through 10, the camera module 1000 includesthe reflecting module 1100, the lens module 1200, and the image sensormodule 1300 is disposed in the housing 1010.

The reflecting module 1100, the lens module 1200, and the image sensormodule 1300 are sequentially provided from one side of the housing 1010to the other side of the housing 1010. The housing 1010 includes theinternal space into which the reflecting module 1100, the lens module1200, and the image sensor module 1300 are inserted (the printed circuitboard 1320 included in the image sensor module 1300 may be attached toan outer portion of the housing 1010). For example, as illustrated inthe drawings, the housing 1010 is integrally formed so that both of thereflecting module 1100 and the lens module 1200 are inserted into theinternal space of the housing 1010. However, the housing 1010 is notlimited to such a configuration. For example, separate housings intowhich the reflecting module 1100 and the lens module 1200 are inserted,respectively, may also be connected to each other.

In addition, the housing 1010 is covered by the cover 1030 so that theinternal space of the housing 1010 is not visible.

The cover 1030 includes the opening 1031 through which light isincident, and a moving direction of the light incident through theopening 1031 is changed by the reflecting module 1100, such that thelight is incident to the lens module 1200. The cover 1030 may beintegrally formed to cover the entire housing 1010, or may be formed byseparate members each covering the reflecting module 1100 and the lensmodule 1200.

To this end, the reflecting module 1100 includes the reflecting member1110 that reflects the light. In addition, the light incident to thelens module 1200 passes through the lenses and is then converted intoand stored as the electrical signal by the image sensor 1310.

As described above, the housing 1010 includes the reflecting module 1100and the lens module 1200 disposed in the internal space of the housing1010. In the internal space of the housing 1010, a space in which thereflecting module 1100 is disposed and a space in which the lens module1200 is disposed are distinguished from each other by protruding walls1007. In addition, the reflecting module 1100 is disposed in front ofthe protruding walls 1007, and the lens module 1200 is disposed behindthe protruding walls 1007. The protruding walls 1007 protrude fromopposite sidewalls of the housing 1010 to the internal space (protrudein the X-axis direction).

In the reflecting module 1100, attractive force is formed between apulling yoke 1153 provided on an inner wall surface of the housing 1010and a pulling magnet 1151 provided on a driving holder 1120, and thedriving holder 1120 may be closely adhered to and supported by the innerwall surface of the housing 1010 by the attractive force. Although notillustrated in the drawings, the housing 1010 may also be provided witha pulling magnet, and the driving holder 1120 may also be provided witha pulling yoke. However, a structure illustrated in the drawings will bedescribed hereinafter for convenience of explanation.

In addition, first ball bearings 1131, a driving plate 1130, and secondball bearings 1133 are provided between the inner wall surface of thehousing 1010 and the driving holder 1120. Since the first ball bearings1131 and the second ball bearings 1133 are closely adhered to seatinggrooves 1132, 1134, 1021, and 1121 while being partially inserted intothe seating grooves 1132, 1134, 1021, and 1121 as described below, whenthe driving holder 1120 and the driving plate 1130 are inserted into theinternal space of the housing 1010, a slight space may be requiredbetween the driving holder 1120 and the protruding walls 1007, and afterthe driving holder 1120 is mounted in the housing 1010, the drivingholder 1120 is closely adhered to the inner wall surface of the housing1010 by the attractive force between the pulling yoke and the pullingmagnet, and a slight space thus remains between the driving holder 1120and the protruding walls 1007.

Therefore, the housing 1010 includes stoppers 1050 fitted onto theprotruding walls 1007 while supporting the driving holder 1120, andhaving a hook shape. The stoppers 1050 support the driving holder 1120in a state in which hook portions thereof are hooked onto the protrudingwalls 1007. Although it is described that the stoppers 1050 support thedriving holder 1120, the driving holder 1120 needs to be substantiallymoved, such that a space is provided between the stoppers 1050 and thedriving holder 1120. Alternatively, in addition, the stoppers 1050 maybe formed of an elastic material to allow the driving holder 1120 to besmoothly moved in a state in which the driving holder 1120 is supportedby the stoppers 1050.

The stoppers 1050 serve as brackets supporting the driving holder 1120when the reflecting module 1100 is not driven, and additionally serve asthe stoppers 1050 adjusting movement of the driving holder 1120 when thereflecting module 1100 is driven. The stoppers 1050 are provided,respectively, on the protruding walls 1007 protruding from the oppositesidewalls of the housing. Even in a case in which the stoppers 1050 arenot provided, the driving holder 1120 may be fixed to the housing by theattractive force between the pulling magnet 1151 and the pulling yoke1153.

In addition, the housing 1010 includes a first driving part 1140 and asecond driving part 1240 each provided in order to drive the reflectingmodule 1100 and the lens module 1200. The first driving part 1140includes coils 1141 b, 1143 b, and 1145 b for driving the reflectingmodule 1100, and the second driving part 1240 includes coils 1241 b and1243 b for driving the lens module 1200. In addition, since the coils1141 b, 1143 b, 1145 b, 1241 b, and 1243 b are provided on the housing1010 in a state in which they are mounted on a main board 1070, thehousing 1010 includes through-holes 1015, 1016, 1017, 1018, and 1019 sothat the coils 1141 b, 1143 b, 1145 b, 1241 b, and 1243 b are exposed tothe internal space of the housing 1010.

The main board 1070 on which the coils 1141 b, 1143 b, 1145 b, 1241 b,and 1243 b are mounted may be entirely connected and integrallyprovided, as illustrated in the drawings. In this case, one terminal maybe provided, and connection of an external power supply and signals maytherefore be easy. However, the main board 1070 is not limited to such aconfiguration, and may also be provided as multiple boards by separatinga board on which coils for the reflecting module 1100 are mounted and aboard on which coils for the lens module 1200 are mounted from eachother.

The reflecting module 1100 changes the path of the light incidentthereto through the opening 1031. When an image or a moving image iscaptured, the image may be blurred or the moving image may be shaken dueto a hand-shake, or other shaking, of a user. In this case, thereflecting module 1100 corrects the hand-shake, or the other shaking, ofthe user by moving the driving holder 1120 on which the reflectingmember 1110 is mounted. For example, when shaking is generated at thetime of capturing the image or the moving image due to the hand-shake,or the other shaking, of the user, a relative displacement correspondingto shaking is provided to the driving holder 1120 to compensate forshaking.

In addition, the OIS function is implemented by the movement of thedriving holder 1120 having a relatively low weight since it does notinclude lenses, and the like, and power consumption may thus besignificantly reduced.

That is, the light on which the OIS is performed is directed to beincident to the lens module 1200 by changing the moving direction of thelight by the movement of the driving holder 1120 on which the reflectingmember 1110 is provided, without moving the lens barrel including thelenses or the image sensor in order to implement the OIS function.

The reflecting module 1100 includes the driving holder 1120 disposed inthe housing 1010 and supported by the housing 1010, the reflectingmember 1110 mounted on the driving holder 1120, and the first drivingpart 1140 that provides driving force to the driving holder 1120.

The reflecting member 1110 changes the moving direction of the light.For example, the reflecting member 1110 is a mirror or a prismreflecting the light (a case in which the reflecting member 1110 is aprism is illustrated in the drawings for convenience of explanation).

The reflecting member 1110 is fixed to the driving holder 1120. Thedriving holder 1120 has a mounting surface 1123 (FIG. 3A) on which thereflecting member 1110 is mounted.

The mounting surface 1123 of the driving holder 1120 is an inclinedsurface so that the path of the light is changed. For example, themounting surface 1123 is an inclined surface that is inclined withrespect to the optical axis (the Z axis) of each of the lenses by 30° to60°. In addition, the inclined surface of the driving holder 1120 isdirected toward the opening 1031 of the cover 1030 through which thelight is incident.

The driving holder 1120 on which the reflecting member 1110 is mountedis movably accommodated in the internal space of the housing 1010. Forexample, the driving holder 1120 is linearly movable along any one of afirst axis (an X axis) and a second axis (a Y axis), and is rotatablearound an axis parallel with a direction in which it is linearlymovable, within the housing 1010. For example, the driving holder 1120may be linearly movable along the first axis (the X axis) and may berotatable around the first axis (the X axis. Alternatively, the drivingholder 1120 may be linearly movable along the second axis (the Y axis)and may be rotatable around the second axis (the Y axis). Forconvenience, an embodiment in which the driving holder 1120 is linearlymovable along the second axis (the Y axis) and is rotatable around thesecond axis (the Y axis), as illustrated in the drawings, willhereinafter be described.

The first axis (the X axis) and the second axis (the Y axis) are axesperpendicular to the optical axis (the Z axis), and may be perpendicularto each other.

The driving holder 1120 is supported by the housing 1010 by the firstball bearings 1131 and the second ball bearings 1133 provided on a frontsurface and a rear surface of the driving plate 1130, respectively, andaligned along the second axis (the Y axis), respectively, so that thedriving holder 1120 is smoothly linearly moved along the second axis(the Y axis) and is smoothly rotated around the second axis (the Yaxis). That is, as illustrated in the drawings, the first ball bearings1131 guide the linear movement along the second axis (the Y axis), andthe second ball bearings 1133 guide the rotation around the second axis(the Y axis).

In the drawings (see FIG. 4, for example), two sets 1131 a and 1131 b offirst ball bearings 1131 aligned along the second axis (the Y axis) andconfigured in pairs and two second ball bearings 1133 aligned along thesecond axis (the Y axis) are illustrated by way of example. Since thedriving plate 1130 is moved along the second axis (the Y axis) in astate in which it is supported by the housing 1010, at least two sets1131 a and 1131 b of first ball bearings 1131 are disposed in parallelwith a second axial direction (the Y-axis direction) and are spacedapart from each other in a first axial direction (the X-axis direction)in order to stably move the driving plate 1130. In this case, any one ofthe two sets 1131 a and 1131 b may also include only one first ballbearing 1131.

The driving holder 1120 is linearly movable along the second axis (the Yaxis) and is rotatable around the second axis (the Y axis), and thefirst ball bearings 1131 or the second ball bearings 1133 are formed ina cylindrical shape and are disposed such that the cylindrical shape isextended along the second axis (the Y axis). In this case, the seatinggrooves 1132, 1134, 1021, and 1121 are also formed in a semi-cylindricalshape corresponding to shapes of the first and second ball bearings (seeFIG. 6B). The two sets of first ball bearings 1131 aligned in pairs inthe second axial direction (the Y axial direction) are illustrated inFIG. 6B, but the first ball bearings 1131 may also be provided as twopillar-shaped (cylindrical or semi-cylindrical) bearings extended to beelongate in the first axial direction (the X-axis direction) byintegrating the two sets of first ball bearings 1131 with each other. Inaddition, an embodiment in which the two second ball bearings 1133 areprovided is illustrated, but one second ball bearing 1133 that isextended to be elongate in the second axial direction (the Y-axisdirection) may also be provided.

In addition, the first ball bearings 1131 and the second ball bearings1133 are disposed on the front surface and the rear surface of thedriving plate 1130, respectively, and the driving plates 1130 aredisposed between the driving holder 1120 and an inner surface of thehousing 1010. In addition, the driving holder 1120 is supported by thehousing 1010 through the driving plate 1130 (the first ball bearings1131 and the second ball bearings 1133 are also disposed between thedriving holder 1120 and the housing 1010) by the attractive forcebetween the pulling magnet 1151 or the pulling yoke provided on thedriving holder 1120 and the pulling yoke 1153 or the pulling magnet 1151provided on the housing 1010.

Contrary to the example illustrated in the drawings, the first ballbearings 1131 may guide the rotation around the second axis (the Yaxis), and the second ball bearings 1133 may guide the linear movementin relation to the second axis (the Y axis). In this case, dispositionshapes of the first ball bearings 1131 and the second ball bearings 1133and shapes of seating grooves 1132, 1134, 1021, and 1121 in which thefirst ball bearings 1131 and the second ball bearings 1133 are disposedmay also be exchanged with each other.

The seating grooves 1132 and 1134 into which the first ball bearings1131 and the second ball bearings 1133 are respectively inserted, areprovided in the front surface and the rear surface of the driving plate1130, respectively, and include first seating grooves 1132 into whichthe first ball bearings 1131 are partially inserted and second seatinggrooves 1134 into which the second ball bearings 1133 are partiallyinserted.

In addition, the housing 1010 includes third seating grooves 1021 intowhich the first ball bearings 1131 are partially inserted, and thedriving holder 1120 may be provided with fourth seating grooves 1121into which the second ball bearings 1133 are partially inserted.

The first ball bearings 1131 are inserted into the first seating grooves1132 and the third seating groove 1021, and are provided between thedriving plate 1130 and the housing 1010. In addition, the first ballbearings 1131 need to be able to be rolled or slid because the firstball bearings 1131 serve to guide the movement of the driving plate 1130in the second axial direction (the Y-axis direction). Therefore, atleast one of the first seating grooves 1132 and the third seatinggrooves 1021 is provided in a groove shape that is elongate in thesecond axial direction (the Y-axis direction).

In addition, when the driving holder 1120 is rotated around the secondaxis (the Y axis), the first ball bearings 1131 inserted into the firstseating grooves 1132 and the third seating grooves 1021 are not moved,but need to be fixed. Therefore, at least one pair of first seatinggrooves 1131 and third seating grooves 1021 facing each other has ashape (for example, cross sections of the seating grooves may have a “V”shape, a “U” shape, a round shape, or a polygonal shape) of which awidth of a cross section becomes smaller as a depth becomes greater.

In addition, the second ball bearings 1133 may be inserted into thesecond seating grooves 1134 and the fourth seating groove 1121, and maybe disposed between the driving plate 1133 and the driving holder 1120.In addition, the second seating grooves 1134 and the fourth seatinggroove 1121 may be formed in a round (e.g., hemispherical) groove shapeor a polygonal (poly-prismatic or poly-pyramidal) groove shape so thatsecond ball bearings 1133 easily rotate to guide the rotation of thedriving holder 1120 around the second axis (the Y axis).

In addition, depths of the seating grooves are smaller than radii of theseating grooves for the purpose of easiness of the movement or therotation of the first ball bearings 1131 and the second ball bearings1133. The first ball bearings 1131 and the second ball bearings 1133 arenot entirely inserted in the seating grooves, but are partially exposed,such that the driving plate 1130 is easily moved and the driving holder1120 is easily rotated.

In addition, positions and the numbers of first seating grooves 1132,second seating grooves 1134, third seating grooves 1021, and fourthseating grooves 1121 may correspond to those of sets of first ballbearings 1131 aligned along the second axis (the Y axis) and second ballbearings 1133 aligned along the second axis (the Y axis).

Here, the first ball bearings 1131 and the second ball bearings 1133function as bearings while being rolled or slid in the first seatinggrooves 1132, the second seating grooves 1134, the third seating grooves1021, and the fourth seating grooves 1121.

The first ball bearings 1131 and the second ball bearings 1133 may havea structure in which they are fixedly disposed in at least one of thehousing 1010, the driving plate 1130, and the driving holder 1120. In anexample, the first ball bearings 1131 are fixedly disposed in thehousing 1010 or the driving plate 1130, and the second ball bearings1133 are fixedly disposed in the driving plate 1130 or the drivingholder 1120. In this case, only a member facing a member in which thefirst ball bearings 1131 or the second ball bearings 1133 are fixedlyprovided is provided with the seating grooves. In this case, the ballbearings function as friction bearings by sliding rather than rotating.

In an embodiment in which the first ball bearings 1131 and the secondball bearings 1133 are fixedly provided in any one of the housing 1010,the driving plate 1130, and the driving holder 1120, the first ballbearings 1131 and the second ball bearings 1133 may be formed in aspherical shape or a hemispherical shape (a case in which the first ballbearings 1131 and the second ball bearings 1133 are provided in thehemispherical shape is only an example, and the first ball bearings 1131and the second ball bearings 1133 may also be provided to have aprotruding length greater or smaller than that of a hemisphere). Asdescribed above, a case in which each of the first ball bearings 1131and the second ball bearings 1133 is formed in the cylindrical shape anddisposed such that the cylindrical shape is extended along the secondaxis (the Y axis) may also be similarly applied.

In addition, the first ball bearings 1131 and the second ball bearings1133 may be separately manufactured and be then provided in or attachedto any one of the housing 1010, the driving plate 1130, and the drivingholder 1120. Alternatively, the first ball bearings 1131 and the secondball bearings 1133 may be formed integrally with the housing 1010, thedriving plate 1130, or the driving holder 1120 at the time ofmanufacturing the housing 1010, the driving plate 1130, or the drivingholder 1120.

The first driving part 1140 generates driving force to move the drivingholder 1120 along the second axis (the Y axis) or to rotate the drivingholder 1120 around the second axis (the Y axis).

As an example, as illustrated in the drawings, the first driving part1140 includes magnets 1141 a, 1143 a, and 1145 a and the coils 1141 b,1143 b, and 1145 b disposed to face the magnets 1141 a, 1143 a, and 1145a. However, the magnets and the coils are not limited to such aconfiguration. That is, driving coils may be disposed in various mannersusing four surfaces including three surfaces of the housing 1010 onwhich the coils 1141 b, 1143 b, and 1145 b are provided and a surface ofthe housing 1010 on which the pulling yoke 1153 is provided, and adisposition of the magnets may also be changed accordingly.

When power is applied to the coils 1141 b, 1143 b, and 1145 b, thedriving holder 1120 on which the magnets 1141 a, 1143 a, and 1145 a aremounted is moved in the second axial direction (the Y-axis direction) oris rotated around the second axis (the Y axis) by electromagneticinteraction between the magnets 1141 a, 1143 a, and 1145 a and the coils1141 b, 1143 b, and 1145 b.

The magnets 1141 a, 1143 a, and 1145 a are mounted on the driving holder1120. As an example, some 1141 a of the magnets 1141 a, 1143 a, and 1145a are mounted on a lower surface of the driving holder 1120, and theothers 1143 a and 1145 a of the magnets 1141 a, 1143 a, and 1145 a aremounted on side surfaces of the driving holder 1120.

The coils 1141 b, 1143 b, and 1145 b are mounted on the housing 1010. Asan example, the coils 1141 b, 1143 b, and 1145 b are mounted on thehousing 1010 through the main board 1070. That is, the coils 1141 b,1143 b, and 1145 b are provided on the main board 1070, and the mainboard 1070 is mounted on the housing 1010. An example in which the mainboard 1070 is entirely integrally provided so that both of the coils1141 b, 1143 b, and 1145 b for the reflecting module 1100 and the coils1241 b and 1243 b for the lens module 1200 are mounted thereon isillustrated in the drawings, but the main board 1070 may be provided astwo or more separate boards on which the coils 1141 b, 1143 b, and 1145b for the reflecting module 1100 and the coils 1241 b and 1243 b for thelens module 1200 are mounted, respectively.

A reinforcing plate (not illustrated) may be mounted below the mainboard 1070 in order to reinforce strength of the main board.

When the driving holder 1120 is rotated, a closed loop control manner ofsensing and feeding back a position of the driving holder 1120 is used.Therefore, position sensors 1141 c and 1143 c are provided in order toperform a closed loop control. The position sensors 1141 c and 1143 cmay be hall sensors.

The position sensors 1141 c and 1143 c are disposed inside or outsidethe coils 1141 b and 1143 b, respectively, and are mounted on the mainboard 1070 on which the coils 1141 b and 1143 b are mounted.

The main board 1070 may include a gyro sensor (not illustrated) sensingshaking factor such as the hand-shake, or the like, of the user, and maybe provided with a driver integrated circuit (IC) (not illustrated)providing driving signals to the coils 1141 b, 1143 b, and 1145 b.

FIGS. 11A through 110 are schematic views illustrating a manner in whichthe driving holder 1120, according to an embodiment, is linearly movedalong a second axis. FIGS. 12A through 12C are schematic viewsillustrating a manner in which the driving holder 1120, according to an,is rotated around a second axis.

Referring to FIGS. 11A through 110, when the driving holder 1120 islinearly moved along the second axis (the Y axis), the driving holder1120 is linearly moved along the second axis (the Y axis) in response tolinear movement of the driving plate 1130 based on at least two sets offirst ball bearings 1131 arranged along the second axis (the Y axis) (inthis case, the driving holder 1120 is not moved relative to the drivingplate 1130). In addition, referring to FIGS. 12A through 12C, when thedriving holder 1120 is rotated around the second axis (the Y axis), thedriving holder 1120 is rotated around the second ball bearings 1133arranged along the second axis (the Y axis) (in this case, the drivingplate 1130 is not rotated, and the driving holder 1120 is thus movedrelative to the driving plate 1130).

That is, when the driving holder 1120 is linearly moved along the secondaxis (the Y axis), the first ball bearings 1131 function, and when thedriving holder 1120 is rotated around the second axis (the Y axis), thesecond ball bearings 1133 function. The reason is that the second ballbearings 1133 aligned along the second axis (the Y axis) are not movedin a state in which they are fitted into the seating grooves when thedriving holder 1120 is linearly moved along the second axis (the Yaxis), and at least two sets of first ball bearings 1131 aligned alongthe second axis (the Y axis) are spaced apart from each other in thefirst axial direction (the X-axis direction) and relative movementbetween the driving holder 1120 and the driving plate 1130 is thus notgenerated in a state in which the driving holder 1120 is supported bythe driving plate 1130 when the driving holder 1120 is rotated aroundthe second axis (the Y axis), as illustrated in the drawings.

The light of which the path is changed by the reflecting module 1100 isincident to the lens module 1200. Therefore, optical axes of the stackedlenses included in the lens module 1200 are aligned in the Z-axialdirection, a direction in which the light is emitted from the reflectingmodule 1100. In addition, the lens module 1200 includes the seconddriving part 1240 in order to implement the AF function or the zoomfunction. In addition, the lens module 1200 has a relatively low weight,since it does not include another component for OIS, may be moved in theoptical axial direction in order to implement the AF function and thezoom function, and power consumption may thus be significantly reduced.

The lens module 1200 includes a lens holder 1220 disposed in theinternal space of the housing 1010, and including lenses stackedtherein, and the second driving part 1240 configured to move the lensholder 1220.

Lenses configured to capture an image of a subject may be accommodatedin the lens holder 1220, and may be mounted along optical axes in thelens holder 1220.

The light of which the moving direction is changed by the reflectingmodule 1100 is refracted while passing through the lenses. The opticalaxis (the Z axis) of each of the lenses is perpendicular to thethickness direction (the Y-axis direction) of the lens module 1200.

The lens holder 1220 is moved in the optical axial direction (theZ-axial direction) for the purpose of AF. As an example, the lens holder1220 is configured to be movable in a direction (including an oppositedirection to the direction) in which the light of which the movingdirection is changed by the reflecting module 1100 passes through thelenses.

The second driving part 1240 generates driving force to move the lensholder 1220 in the optical axial direction (the Z-axial direction). Thatis, the second driving part 1240 moves the lens holder 1220 to change adistance between the lens holder 1220 and the reflecting module 1100.

As an example, the second driving part 1240 includes magnets 1241 a and1243 a and the coils 1241 b and 1243 b disposed to face the magnets 1241a and 1243 a.

When power is applied to the coils 1241 b and 1243 b, the lens holder1220 on which the magnets 1241 a and 1243 a are mounted is moved in theoptical axial direction (the Z-axial direction) by electromagneticinteraction between the magnets 1241 a and 1243 a and the coils 1241 band 1243 b.

The magnets 1241 a and 1243 a are mounted on the lens holder 1220. As anexample, the magnets 1241 a and 1243 a are mounted on side surfaces ofthe lens holder 1220.

The coils 1241 b and 1243 b are mounted on the housing 1010. As anexample, the main board 1070 is mounted on the housing 1010 in a statein which the coils 1241 b and 1243 b are mounted on the main board 1070.Here, a case in which the coils 1141 b, 1143 b, and 1145 b for thereflecting module 1100 and the coils 1241 b and 1243 b for the lensmodule 1200 are mounted on the main board 1070 is illustrated in thedrawings for convenience of explanation, the main board 1070 is notlimited to the described configuration, but may be also provided asseparate boards on which the coils 1141 b, 1143 b, and 1145 b for thereflecting module 1100 and the coils 1241 b and 1243 b for the lensmodule 1200 are mounted, respectively.

When the lens holder 1220 is moved, a closed loop control manner ofsensing and feeding back a position of the lens holder 1220 may be used.Therefore, a position sensor 1243 c is provided to perform a closed loopcontrol. The position sensor 1243 c may be a hall sensor.

The position sensor 1243 c may be disposed inside or outside the coil1243 b, and may be mounted on the main board 1070 on which the coil 1243b is mounted.

The lens holder 1220 is disposed in the housing 1010 and is movable inthe optical axial direction (the Z-axial direction). As an example, ballmembers 1250 (see FIGS. 4 and 7) are disposed between the lens holder1220 and the housing 1010.

The ball members 1250 function as bearings guiding the movement of thelens holder 1220 in an AF process. In addition, the ball members 1250may also serve to maintain a spacing between the lens holder 1220 andthe housing 1010.

The ball members 1250 are rolled in the optical axial direction (theZ-axial direction) when driving force in the optical axial direction(the Z-axial direction) is generated. Therefore, the ball members 1250guide the movement of the lens holder 1220 in the optical axialdirection (the Z-axial direction).

Guide grooves 1221 and 1231 (see FIGS. 7 and 5) in which the ballmembers 1250 are accommodated are respectively formed in at least one ofsurfaces of the lens holder 1220 facing the housing 1010 and in at leastone surface of the housing 1010.

The ball members 1250 are accommodated in the guide grooves 1221 and1231 and are fitted between the lens holder 1220 and the housing 1010.

The guide grooves 1221 and 1231 may have a length in the optical axialdirection (the Z-axial direction).

The ball members 1250 may be limited from being moved in the first axialdirection (the X-axis direction) and the second axial direction (theY-axis direction) and can be moved in only the optical axial direction(the Z-axial direction), in a state in which they are accommodated inthe plurality of guide grooves 1221 and 1231. As an example, the ballmembers 1250 are rolled in only the optical axial direction (the Z-axialdirection).

To this end, a plane shape of each of the guide grooves 1221 and 1231may be a rectangular shape formed to be elongate in the optical axialdirection (the Z-axial direction). In addition, cross sections of theplurality of guide grooves 1221 and 1231 may have various shapes such asa round shape, and a polygonal shape.

The lens holder 1220 is pressed toward the housing 1010 so that theplurality of ball members 1250 are maintained in a state in which theyare in contact with the lens holder 1220 and the housing 1010.

To this end, as shown in in FIG. 4, the housing 1010 is provided withyokes 1260 facing the magnets 1241 a and 1243 a mounted on the lensholder 1220. The yokes 1260 may be formed of a magnetic material.

Attractive force acts between the yokes 1260 and the magnets 1241 a and1243 a. Therefore, the lens holder 1220 is moved in the optical axialdirection (the Z-axial direction) by the driving force of the seconddriving part 1240 in a state in which the lens holder 1220 is in contactwith the ball members 1250.

FIG. 13 is a perspective view illustrating the main board 1170,according to an embodiment, and the coils 1141 b, 1143 b, 1145 b, 1241b, and 1243 b and components 1078 mounted on the main board.

Referring to FIG. 13, the coils 1141 b, 1143 b, and 1145 b of the firstdriving part 1140 for driving the reflecting module 1100 and the coils1241 b and 1243 b of the second driving part 1240 for driving the lensmodule 1200 are mounted on an inner surface of the main board 1070. Inaddition, the components 1078, such as various passive elements andactive elements, and a gyro sensor 1079, are mounted on an outer surfaceof the main board 1070. Therefore, the main board 1070 is a double-sidedsubstrate.

In detail, the main board 1070 includes a first side substrate 1071 anda second side substrate 1072 disposed approximately in parallel witheach other, and a bottom substrate 1073 connecting the first sidesubstrate 1071 and the second side substrate 1072 to each other. Themain board 1070 further includes a terminal part 1074 for connection ofan external power supply and a signal, which can be connected to any oneof the first side substrate 1071, the second side substrate 1072, andthe bottom substrate 1073.

Some 1143 b (see FIG. 13) of the coils 1141 b, 1143 b, and 1145 b of thefirst driving part 1140 for driving the reflecting module 1100, thesensor 1143 c of the first driving part 1140 for sensing a position ofthe reflecting module 1100, and some 1241 b (see FIG. 13) of the coils1241 b and 1243 b of the second driving part 1240 for driving the lensmodule 1200 are mounted on the first side substrate 1071.

Some 1145 b (see FIG. 13) of the coils 1141 b, 1143 b, and 1145 b of thefirst driving part 1140 for driving the reflecting module 1100 and some1243 b (see FIG. 13) of the coils 1241 b and 1243 b of the seconddriving part 1240 for driving the lens module 1200 are mounted on thesecond side substrate 1072.

Some 1141 b (see FIG. 13) of the coils 1141 b, 1143 b, and 1145 b of thefirst driving part 1140 for driving the reflecting module 1100 and thesensor 1141 c of the first driving part 1140 for sensing the position ofthe reflecting module 1100 are mounted on the bottom substrate 1073.

An embodiment in which the components 1078 such as the various passiveelements, active elements, and the gyro sensor 1079 are mounted on thefirst side substrate 1071 is illustrated in FIG. 13, but the components1078 may be mounted on the second side substrate 1072 or may beappropriately distributed and mounted on the first side substrate 1071and the second side substrate 1072.

FIG. 14 is a perspective view illustrating a portable electronic device2, according to another embodiment.

Referring to FIG. 14, the portable electronic device 2 is a portableelectronic device such as a mobile communications terminal, asmartphone, or a tablet personal computer (PC), in which camera modules500 and 1000 are mounted.

The camera module 500 may be the same as the camera module 1000, whichis described with reference to FIGS. 2 through 13. That is, the portableelectronic device 2 includes a dual camera module, which may include twocamera modules 1000. Alternatively, the camera module 500 may bedifferent than the camera module 1000.

As set forth above, a reflecting module for OIS and a camera moduleincluding the reflecting module has a simple structure and a reducedsize while implementing an autofocusing function, a zoom function, andan OIS function. In addition, power consumption by the camera module issignificantly reduced.

While this disclosure includes specific examples, it will be apparentafter an understanding of the disclosure of this application thatvarious changes in form and details may be made in these exampleswithout departing from the spirit and scope of the claims and theirequivalents. The examples described herein are to be considered in adescriptive sense only, and not for purposes of limitation. Descriptionsof features or aspects in each example are to be considered as beingapplicable to similar features or aspects in other examples. Suitableresults may be achieved if the described techniques are performed in adifferent order, and/or if components in a described system,architecture, device, or circuit are combined in a different manner,and/or replaced or supplemented by other components or theirequivalents. Therefore, the scope of the disclosure is defined not bythe detailed description, but by the claims and their equivalents, andall variations within the scope of the claims and their equivalents areto be construed as being included in the disclosure.

What is claimed is:
 1. A reflecting module for optical imagestabilization (OIS), comprising: a housing comprising an internal space;a driving holder comprising a reflecting member and supported by aninner wall of the housing in a state in which a driving plate is fittedbetween the driving holder and the housing so that the driving holder isprovided in the internal space; and a driving part configured to providedriving force to the driving holder to move the driving holder, whereinthe driving plate is linearly movable along one axis approximatelyperpendicular to an optical axis or is rotatable around the one axiswith respect to the housing, and the driving holder is linearly movablealong the one axis or is rotatable around the one axis with respect tothe driving plate.
 2. The reflecting module for OIS of claim 1, whereinthe driving plate is configured to move together with the drivingholder, in response to the driving plate being linearly moved along theone axis or rotated around the one axis, and the driving holder isconfigured to move relative to the driving plate, in response to thedriving holder being linearly moved along the one axis or rotated aroundthe one axis.
 3. The reflecting module for OIS of claim 1, wherein thedriving plate comprises one or more first ball bearing sets comprisingfirst ball bearings aligned in one axial direction on a surface of thedriving plate facing the housing, and a second ball bearing setcomprising second ball bearings aligned in the one axial direction onanother surface of the driving plate facing the driving holder.
 4. Thereflecting module for OIS of claim 3, wherein the one or more first ballbearing sets comprise two first ball bearing sets, and the first ballbearings are aligned in the one axial direction between the drivingplate and the housing when the driving plate is linearly moved withrespect to the housing.
 5. The reflecting module for OIS of claim 3,wherein the second ball bearings comprise two or more second ballbearings, and the two or more second ball bearings are aligned in theone axial direction between the driving holder and the driving platewhen the driving holder is rotated with respect to the driving plate. 6.The reflecting module for OIS of claim 5, wherein the two or more secondball bearings are positioned at approximately a center of the drivingplate in another axial direction perpendicular to the optical axis andthe one axis.
 7. The reflecting module for OIS of claim 3, wherein thefirst ball bearings are fixed to the driving plate or the housing, orare freely rotatable, and the second ball bearings are fixed to thedriving plate or the driving holder, or are freely rotatable.
 8. Thereflecting module for OIS of claim 3, wherein the first and second ballbearings comprise a spherical shape or a spherical shape of which aportion is cut.
 9. The reflecting module for OIS of claim 1, wherein thedriving plate comprises one or more ball bearings comprising acylindrical or semi-cylindrical shape that is elongate along anotheraxis perpendicular to the optical axis and the one axis between thedriving plate and the housing when the driving plate is linearly movedwith respect to the housing.
 10. The reflecting module for OIS of claim1, wherein the driving holder comprises one or more ball bearingscomprising a cylindrical or semi-cylindrical shape that is elongatealong the one axis between the driving holder and the driving plate whenthe driving holder is rotated with respect to the driving plate.
 11. Thereflecting module for OIS of claim 1, further comprising: a pullingmagnet disposed in one of the housing and the driving holder; and apulling yoke disposed in the other of the housing and the drivingholder, wherein the driving holder is supported by the inner wall of thehousing by attractive force between the pulling magnet and the pullingyoke.
 12. The reflecting module for OIS of claim 3, wherein any one offacing surfaces of the housing and the driving plate comprises seatinggrooves into which the ball bearings are inserted.
 13. The reflectingmodule for OIS of claim 12, wherein the seating grooves are elongate ina direction in which the ball bearings are aligned.
 14. The reflectingmodule for OIS of claim 12, wherein a cross section of the seatinggrooves comprises a polygonal shape or a round shape.
 15. A cameramodule comprising: a lens module comprising lenses; and a reflectingmodule for optical image stabilization (OIS) disposed in front of thelens module and configured to change a path of light incident to thereflecting module to direct the light toward the lens module, thereflecting module comprising a housing comprising an internal space, adriving holder comprising a reflecting member and supported by an innerwall of the housing in a state in which a driving plate is fittedbetween the driving holder and the housing so that the driving holder isprovided in the internal space, and a driving part configured to providedriving force to the driving holder to move the driving holder, whereinthe driving plate is linearly movable along one axis approximatelyperpendicular to an optical axis or is rotatable around the one axiswith respect to the housing, and the driving holder is linearly movablealong the one axis or is rotatable around the one axis with respect tothe driving plate.
 16. The camera module of claim 15, wherein the lensmodule is disposed in the housing, and a main board on which coils fordriving the lens module and the reflecting module for OIS are mounted isdisposed on side surfaces and a bottom surface of the housing.
 17. Thecamera module of claim 16, wherein the main board comprises adouble-sided substrate, the coils are mounted on an inner surface of themain board toward the internal space of the housing, and components anda gyro sensor are mounted on an outer surface of the main board opposingthe inner surface of the main board.